Explore circuits - Alarm Circuits



Circuit / Schematic diagram of	Description

Proximity Alarm (circuit on demand)	Metal plate as sensor and inverter as oscillator to produce alarm signal.
Intruder Alarm (circuit on demand)	The alarm uses a pyrosensor to detect the presence of animals or human beings by changes in heat radiation.
Burglar alarm-1	Alarm triggered by four different sources
Burglar Alarm-2
Burglar Alarm-3	Normally open and Normally closed timed
Burglar Alarm with timer	Alarm automatically switches off after pre defined time
5 Zone Alarm
5 Zone Alarm Circuit
2-Zone Alarm
555 timer based alarm
Motion Detector/Alarm	Circuit working on IR Tran receiver principle
Motion Detector/Alarm-2
Ultrasonic Motion Detector	Multipurpose circuit includes PCB layout
Touched Triggered Alarm
Anit Theft Motorcycle Alarm
Anti-Theft Security For Car Audios
Automatic Light With Alarm
Car Alarm and Immobilizer
Car anti theft wireless alarm.	FM based wireless alarm
Car indicator alarm
Light triggered Alarm	Triggers an alarm when detects variation in light intensity
Fire Alarm	Operates when senses smoke between bulb and LDR
Fridge Door Alarm
Frost alarm
Frost Alarm
Fuse monitor/Alarm
Gate Alarm Circuit
Hijack Alarm	Alarm triggered If a door is opened while the ignition is switched.
Intruder Radio Alert System
Light-sensitive Alarm
Mini Alarms	Very handy and consumes very less amount of current
Motorcycle Alarm 1
Motorcycle Alarm 2
Motorcycle Alarm 3
Motorcycle Alarms 5 & 6
Presence Detector With alarm
Personal Alarm 1
Personal Alarm 2
Proximity Alarm 1	Alarm with NOT gate latch
Proximity Alarm 2
Proximity Alarm 3	Detection based on eddy current in living creature
Infrared Motion Sensor	Sensor based on Piezoelectric material
Rain Alarm
Refrigerator Door Alarm
Security Alarm
Speed Limit Alarm
Theft preventer alarm	Alarm trigged when thin wire connected to the system is broken
Touch Activated Alarm

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